If he was making the reselling comments AFTER it showed up I would see your point but not before. Rethinking your build is not a sign of guilt. How much insurance was on it? Enough to cover damage cost? That might be a reasonable resolution. If I was in possession of the blower I would just be looking for compensation for damages. Its a polished blower. None of those marks hurt function just form. Sand it all down and polish and they will be minimal. Not perfect but better. Just saying.